Window screen



M. PoLLAcK WINDOW SCREEN Dec. 3; 1929.

Filed Oct. 16. 1928 *2 sheetss 'f heet 1 gwuemto'c Pollack Dec. 3, 1929. M. POLLACK 4 WINDOW SCREEN Filed Oct. 16. 1928 2 sheets-she f 2 gwm'nioz 0 jy a n Pollack,

. 3&1, Q I abkomg Patented Dec. 3, 1929 PATENT OFFICE MAX POI-LACK, OF CHELSEA, MASSACHUSETTS wmnow scnnnn Application filed October 16, 1928. Serial No. 812,803.

This invention relates to an improved window screen and more particularly to novel auxiliary means for slidably mounting the screen in the window frame.

My principal object is to generally improve upon prior patented and marketed structures by providing an arrangement which is original and different in construction and especially suitable for firmly removably holdlng the screen in operative position, but permitting the screen to be manually raised or lowered with ease.

In carrying out the invention I have se lected appropriate structural features and organized these in a manner to provide a complete structure which, it is believed, will supersede known devices because of the fact that it is especially suitable from a standpoint of commercial success and comparative utility.

The particular details and their relative arrangement and association will become more readily apparent from the following description and drawings.

In the drawings:

Figure 1 is a view in section and elevation showing a fragmentary portion of a window and window frame, with the improved sliding screen mounted in the frame.

Figure 2 is a horizontal sectional view through the structure seen in Figure 1.

Figures 3 and 4 are enlarged fragmentary detail sectional views taken approximately upon the planes of the lines 33 and M respectively of Figure 1.

Figure 5 is a similar sectional view taken approximately upon the plane of the line 5-5 of Figure 1.

Figure 6 is a perspective view of one of the principal details of the invention.

Figure 7 is a perspective view of a sliding finger bracket.

In the drawings and particularly in Figure 1, 8 designates the window frame and 9 one of the window sashes. The'window frame is provided with ordinary vertically disposed guiding beads 10 on opposite sides which serve to accommodate the sliding screen 11. The screen may comprise an ordinary wooden frame and suitable wire mesh. One

rip. The arm 14; is slidable in a slot formed 1n the vertical bar of the screen frame so that it may be adjusted in or out as detailed in Figure 5. In this connection I call attention to a finger notch or niche 17 which cooperates with the finger piece 16 to facilitate gras'pin of the bracket with the fingers. I

also cal attention to a retaining screw 18 which serves to hold the bracket in place and limits sliding movement in an outward direction. There are two of these brackets as shown in Figure 1 and they may be pulled out to aid in inserting and removing the screen. These details are found on one side of the screen.

On the other side of the screen is a similarguide channel 19 slidably engaging the left hand uide head. This guide channel is adjust-ab y mounted on the adjacent vertical side bar of the screen frame. rigidly mounted on a metal box 20. This box is of elongated form and slidably mounted on the screen frame. For instance as shown in Figure 4 bolts 21 pass through the screen frame bar and through slots 22 in the side walls of the box thus holding the box in place and limiting its sliding movement in opposite directions. As shown in Figure 6 the box is provided with vertically spaced internal guide pins 23' which extend slidably into sockets 24 as shown inFigure 3. This adds to the rigidity of the structure and guards against disalinement. Fastened to the screen frame at vertically spaced points are flat tensioning sprin s 25 whose outer curved ends bear against t e box to normally force it in a direction from right to left in Figurel. This arrangement thus holds the channel 19 in yieldable sliding engagement with the complemental guide bea In fact, it is The gist of the invention consists in providing an undcrsize screen frame with vertical guide members slidably cooperating with stationary guide members on the window frame, wherein one guide member is rigidly mounted on the screen frame and the other screen frame guide member is slidabl mounted and yieldably held in contact wit the complemental guide member on the window frame.

When assembled, the metal box may be pressed inwardly on the screen frame, and when released, the spring pushes it outward. To insert the screen, the guide channel 19 is placed over the adjacent guide bead 10 of the window frame. Pressure is then applied to the'opposite side of the screen frame, which causes it to depress the spring 25 and decrease 1 the effective widths of the screen frame so that the guide channel 12 on the opposite side of the screen frame may be readily placed 7 over the guide head 10 on the adjacent side of the window frame. The springs then force the main frame of the screen outward and insure a good fit of the screen between the guide members or beads 10. The screen can only be removed by the use of the finger brackets 13, but may be readily raised or lowered to any desired height.

The spring tensioning means is regarded as important as well as the guide pins which render the structure exceptionally steady and reliable. Then too, the slidable finger brackets which may be moved in and out of position are regarded as a feature of distinction. In all, it is believed that the organization of parts provide an efficient structure which will well serve the purposes of an invention of this class. It is thought that by considering the description in connection with the drawings, however, a clear understanding of the construction and operation and features will be quite clear. Consequently a more lengthy description is deemed unnecessary.

Minor changes in shape, size and reared on the oppd'site vertical frame bar of said frame. is

2. A window screen including a frame provided on one side with a rigid vertical guide member, an elongated box slidably telescoped on the opposite side of the frame, a second rangement of parts coming within the field of invention claimed may be resorted to in actual practice if desired. For example, the invention is of such scope as to comprehend the reversal of guide members 10, 12 and 19 by placing the members 10 on the screen and the members 12 and 19 on the window frame.

I claim:

1. A window screen, including a frame, a rigid guide channel fastened to one vertical side bar of said frame, said side bar being provided with slots, and finger brackets slidably mounted in said slots, each bracket comprising a body of right angular design, whose long arm functions as a shank and is provided with an elongated slot, and whose short arm forms a finger piece, retaining screws carried by the side bar of the frame and passing through the slots in said shanks, and a spring-pressed guide channel slidably m0unt- 

